How to add a cron job in Linux?

How to add a cron job in Linux?

Every day we perform chronic tasks, akin to Unix Cron jobs that automate recurring tasks on a schedule. Users define jobs in a 'crontab' with a specific syntax, utilizing special characters for precise timing. An example job to run hourly is "0 * * * * /opt/aggregator/job.sh". To add a job, edit 'cronjob1' with a text editor, then load it using 'crontab cronjob1'. Verify it with 'crontab -l'. Monitoring cron jobs is crucial for SREs, a topic for a future post.